Cutlery-polishing machine



C. H. HEMMING.

CUTLERY POLISHING MACHINE.

APPUCATION FILED MN. 10, 1920.

1,422,358. Patented July 11, 1922.

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mmvroa 23 ATTORNEY C. H. HEMMING.

CUTLERY POLISHING MACHINE.

APPLICATION FILED JAN. 10, I920.

Patented July 11, 1922.

@SHEETS-SIIEH 2- [NI/ENTOR Arron/m C. H. HEMMING.

CUTLERY POLISHING MACHINE.

APPLICATION FILED JAN. 0, 1920.

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f A rromvs r Patented July 11, 1922 CARL H. HEMMING, OF NEW HAVEN, CONNECTICUT.

CUTLEEY-POLISHING MACHINE.

Specification of Letters Patent.

Patented July 11, 1922.

Application filed January 10. 1920. Serial No. 350,556.

T 0 all whom it may concern:

Be it known that I. CARL H. Hninrmo. a citizen of the United States. residing at New Haven. in the county of New Haven and State of Connecticut. have invented certain new and useful Improvements in Cutlery- Polishing Machines; and I do hereby declare the following to be a full. clear. and exact description of the invention. such as will onable others skilled in the art to which it appertains to make and use the same.

My invention relates to polishing machines of the type where the work is polished between opposed abrasion wheels.

Referring to the accompanying drawings wherein the same figures and letters of reference indicate like parts throughout the several views:

Fig. 1 represents a plan view of the machine;

Fig. 2 is a front elevation of the machine. broken view of the abrasion wheels. and supporting legs;

Fig. 3 is a Side elevation of the machine looking in the direction of arrow 0. Fig. 1. broken view of one of the driving pulleys and supporting legs with the abrasion wheels omitted:

Fig. 4 is an enlarged broken view partly in section relating to mechanism connectcd with the movement of one of the abrasion wheels: and

Fig. 5 is a detail view of a knife blade.

The opposed abrasion wheels 1 and 2 are mounted on their shafts 3-4 journalcd in boxes 56 forming a part of the swinging standards 7-8. These standards are ad iustablv secured to the rock shafts 9-4 0. the latter shown more clearly in Fig. 3. These rock shafts are journaled in the standards 11-12 secured to the machine bed 13. The rock shafts are longitudinally adjusted to align the abrasion wheels through the medium of the short shafts 14-i5 whose inner threaded ends Pi -15* register with and engage in threaded bores in the ends of said rock shafts. as indicated at 10 in Figure 3. and 16-17 are standards in which the adiusting shafts l4-15 are rotatabli located and actuated bv their hand wheels 18-19.

The periphery of the abrasion wheel 1 is norrnall i located at the vertical central position or polishing center indicated by the dotted line b. Fig. 2. and is adjustablv maintained in such central position by means of the adjusting screw 20 mounted in the stand ard 2'i. The inner end of this screw rests against the standard 7- and the opposite end carries the bevel pinion 22 see also Fig. 1registering with the bevel pinion carried by the shaft 24 journaled in. the standards 25-26 and controlled by the hand wheel 27. 28 is a rod whose outer threaded end is mounted in the standard 29. and whose inner end is supported in an elongated openiugnot shown-in the standard 7. This opening. however. is similar to the opening INL Fig. 3. in the standard R and for the same purpose. viz: to enable the standards 7-S to be longitudinally adjusted. 31.Fig. 2-is a tension spring located between the standard 7 and the adjustable hand-wheel 32 mounted on the threaded part of the rod 28. The opposite standard 8 is provided with similar mechanism. viz: the rod adjustable hand-wheel 34. tension spring 35. and the supporting standard 36. As the springs 3135 exert a constant tension against the standards 7-8 to bring the abrasion wheels in close relation during the polishing. they are designated as wheel tension springs.

37 is a tube anchored at one end to the standard 28. with its opposite end. projecting freely through the elongated opening 39-- Fig. 3-of the swinging standard 8. Be tween the washer 40-see also Fig. 4and the standard 38 is located the spring 41.

adapted to be compressed by the chain 42 passing over the sprocket wheels 43-44. Fig. 2. and connecting with the foot treadle 4.5. The opposite end of this chain is secured-. Fig. 4-to the movable pin 46 located in the open slot 47 formed in the outer end of the tube 37.

4 is an adjustable forked knife support having the small antifriction rollers 49 mounted in its upper ends and the additional supporting plate 0 projecting therefrom. 51 is a bar secured to this knife support having a sliding fit in the projection 52 secured to the bed. The lower end of this bar carries the roller 53 engaging the treadle 54. pivotally mounted in the bracket 55. The collars 56--57 arc adiustablv mounted on the bar 1. the former-Fig. 2-engaging the lower end of the projection 52 locates the extreme upper position of the knife support 48. and the latter 57 engaging the upper surface 52 of the projection 52. locates the extreme lower position of the knife sup ort.

p The well known means for rotating the polishing wheel shafts 34 on their swinging standards are briefly described as follows: 58-59 are tight pulleys mounted on the projecting ends of the polishing wheel shafts. and the projecting ends of the rock shafts 910 support three pulleys ot the same size on each shaft. As all the pulleys on the rock shaft 9 are not shown, reference is had to Fig. 3. showing the pulleys (SO-6i and 62 mounted on the rock shaft 10, or. in other words. secured to the sleeve 63 rotatably mounted on said shaft. Power is transmitted, from an outside sourccnot shownto the pulley 62. and from thence to the pulley .59. on the polishing wheel shaft l. through the medium of the belt 64. The pulleys 6l, being secured together. form. practically, a single pulley. A similar arng n before mentioned. of pulleys are secured to the sleeve mounted on the rock shaft, Fig. 1, two only of the pulleys. 66-67 being shown. The belt 68. Fig. 3. transmits the power to the fixed pulley 58 on the polishing wheel shaft 3.

As before mentioned. the Face oi th abrasion Wheel 1 is normall i' located al the polishing center I), and as it wear away is maintained in such position by means of the adjpsting screw 20. In operation. the large spr ng 41 is first compressed by the treaille 45 and chain 42 to bring the abrasion whee] 2 un er the influence of the spring 35. whose stored up tension will force said wheel into its operative position shown in Fig. 2. is soon, therefore, as the large spring it is compressed, both wheels will then he placed under the influence of the wheel tension springs 3135 during the polishing operation. This is an important feature. as the wheels are always in flexible contact with the ork and are thus at liberty to come and go in accordance with. any iill'latlflll oc curring in the thickness of the work. This flexible action of the wheels will also give :i

better nish to the work than can be obta ned ma ntaining an unyielding pressure of tie wheels thereagainst.

Releasing the pressure on the tool: treatllc 45 will cause spring 41 to react and force the Wheel 2 away from the wheel 1. with its standard 8 resting against the screw 69. which screw is adjustahly mountec in the steindard 7". This reaction of spring 4-] wi also restore tension in the spring 35.

As the contact point of the abrasion wheels. represented by the dotted line F g. 2, is too narrow to cover comparatively large surfaces-lilte For instance. huh-her kn ves, carving knives. etc.-I have arranged: the previously described adjustable kn fe support adapted to finish onlv one half of wide blades as they are passed he tween the abrasion wheels. While one foot of the operator i with the treadle l5 during the polishingoporation, the other foot is at liberty to engage the other trcadle 54 and elevate the knife support 48 into the position shown in Fig. 2. and when in such position, the lower half (l of the blade Ti. Fig. 5. will he finished. Releasing treadle oi, the knife holder will drop bygrai'ity to a position for finishing the other hali' r of the blade. The ollars 5(,5T can bereadily adjusted for blades of any width, while the floor T3 can serve as a swpping point for the treadle l5. and it can be adjusted with respect to sucl position by means of the turnlwckle T2.

Havingthns described my intention, what 1 claim is:

l. A machine of? the character described, comprising, opposed abrasion Wheels, rotatable shafts therefor jourpaled in standards mounted. on rocker-shali'ts, and Wheel tension springs adapted to normally force the wheels toward their central polishing position. means for normally holding one of said wheels in such central position, a spring of greater tension than the wheel tension springs adapted to force the other of said heels into open position, and means adapted to tcmporarilv release the greater tension spring and place said open positioned wheel under its wheel tension spring.

machine of the character described having opposed abrasion wheels, rotatable shafts therefor journaled in standards mounted on rocker shafts. and Wheel tension springs adapted to normally force the wheels toward their central polishing position. means .fior normally and adjustably holding one of said wheels in such G nt-Bail position. a spring of greater tension than the wheel tension spring o l the other wheel adapted to force said wheel into open posilion and thus compress its wheel tension spring, and foot treadle mechanism adapted to release the greater tension spring and place said open positioned wheel under the control of its wheel tension spring.

23. A polishing machine comprising opposed. abrasion wheels. means adjustahly supporting the same for movement toward and away from each other, means for sup- [)(H'tlitl a pie'ce of work between the Wheels, and means For axiallyadjusting the Wheels independently oi each other and relative to the work supporting'means.

4'. polishing machine comprising opposed abrasion wheels. 21 rockably mount-ed standard. shai ts supporting the wheels. one of said shaits heing journaled in the standard. variably tensioned meanst'or urging the standard in a direction to bring the abrasion wheels tt'igether. and a lever controlled means For moving the standard against said tension means.

5. polishing niachinc posed abrasion the wheels for comprising opwheels. means supporting relative axial adjustments,

means for supporting work between the wheels for adjustment transverse to the adjustment of the wheels, and means for effecting the individual adjustments.

6. A polishing machine comprising opposed abrasion Wheels, means supporting the wheels for relative axial adjustments, means for supporting work between the wheels for adjustment transverse to the adjustment of the wheels, treadle-controlled means for moving one wheel from the other in a radial direction, and treadle-controlled means for effecting adjustment of said work supporting means.

7. A polishing machine comprising opposed abrasion wheels, means for supporting the work between the wheels for adjustment transverse to the adjustment of the wheels, treadle-controlled means for moving one wheel from the other in a radial direction, a foot treadle mechanism eonneeted to the work supporting means to adjust the same from one position to another, and stop means for determining the position of such adjustments.

In testimony whereof I affix my signature.

CARL H. HEMMING. 

